Pump with gauge

ABSTRACT

A pump includes a base, a pumping set, a first joint, a gauge set, a second joint and a nozzle. The base includes a socket. The gauge set includes a gauge, a housing for receiving the gauge and a tube extending from the housing. The pumping set includes a cylinder inserted in the socket and a piston put in the cylinder. The first joint is put in the cylinder and includes a transverse channel and an axial channel communicated with the transverse channel. The second joint is inserted in the socket, the cylinder, the transverse channel of the first joint and the tube. The second joint includes an axial channel, a first transverse channel for communicating the axial channel hereof with the axial channel of the first joint and a second transverse channel for communicating the axial channel thereof with the tube. The nozzle is communicated with the second joint.

CROSS-REFERENCE

[0001] The present application is a continuation-in-part application ofU.S. Pat. No. 10/189441.

FIELD OF INVENTION

[0002] The present invention relates to a pump equipped with a gauge.

BACKGROUND OF INVENTION

[0003] Taiwanese Patent Publication No. 446070 teaches an upright pumpincluding internal and external cylinders. This conventional pumpincludes a base 10, an internal cylinder 24 mounted on the base 10, apiston 43 movably inserted in the internal cylinder 24, a rod 41connected with the piston 43, an external cylinder 50 mounted on theinternal cylinder 24, a gauge set 70 mounted on the external cylinder 50and a nozzle 90 in communication with the gauge set 70 through a pipe80. The internal cylinder 24 defines a space 22 and an aperture 25 at alower end in communication with the space 22. A space 52 is confinedbetween the internal cylinder 24 and the external cylinder 50. The space22 is in communication with the space 52 through the aperture 25. Theexternal cylinder 50 defines an aperture 53 near an upper end. The gaugeset 70 is located at the upper end of the external cylinder 50. A spacedefined in the gauge set 70 is in communication with the space 52through the aperture 53. In pumping, pressurized air flows from thespace 22 to the space 52 from which the pressurized air flows to thespace defined in the gauge set 70 through the aperture 53. Thisconventional pump is complicated in structure and causes trouble for aworker to assemble and therefore entails a high cost for fabrication.The pressurized air travels for a distance twice as much as the lengthof the internal cylinder 24, thus reducing efficiency for pumping.

[0004] The present invention is therefore intended to obviate or atleast alleviate the problems encountered in prior art.

SUMMARY OF INVENTION

[0005] It is the primary objective of the present invention to provide asimple pump equipped with a gauge that can easily be observed.

[0006] According to the present invention, a pump includes a base, apumping set, a first joint, a gauge set, a second joint and a nozzle.The base includes a socket. The gauge set includes a gauge, a housingfor receiving the gauge and a tube extending from the housing. Thepumping set includes a cylinder inserted in the socket and a piston putin the cylinder. The first joint is put in the cylinder and includes atransverse channel and an axial channel communicated with the transversechannel. The second joint is inserted in the socket, the cylinder, thetransverse channel of the first joint and the tube. The second jointincludes an axial channel, a first transverse channel for communicatingthe axial channel hereof with the axial channel of the first joint and asecond transverse channel for communicating the axial channel thereofwith the tube. The nozzle is communicated with the second joint.

[0007] Other objects, advantages and novel features of the inventionwill become more apparent from the detailed description when taken inconjunction with the drawings.

BRIEF DESCRIPTION OF DRAWINGS

[0008] The present invention will be described through detailedillustration of embodiments referring to the drawings.

[0009]FIG. 1 is a perspective view of a pump according to a firstembodiment of the present invention.

[0010]FIG. 2 is an exploded view of the pump of FIG. 1.

[0011]FIG. 3 is a cross-sectional view of the pump of FIG. 1.

[0012]FIG. 4 is a cross-sectional view of a pump according to a secondembodiment of the present invention.

DETAILED DESCRIPTION OF EMBODIMENTS

[0013] Referring to FIGS. 1-3, a pump 60 according to a first embodimentof the present invention includes a base 10, a pumping set 20 incommunication with the base 10, a gauge set 70 in communication with thebase 10 and a nozzle set 50 in communication with the gauge set 70.

[0014] The base 10 includes a socket 12 and two pedals 14 extending fromthe socket 12. The socket 12 defines two apertures 16.

[0015] The pumping set 20 includes a cylinder 24, a piston 22 put in thecylinder 24, a rod 21 connected with the piston 22 and a handle 25attached to the rod 21. The cylinder 24 defines two apertures 23 near alower end thereof. The cylinder 24, the piston 22 and the rod 21 willnot be described in detail for being conventional.

[0016] A first joint 30 defines a transverse channel 32 and an axialchannel 33 in communication with the transverse channel 32. An annularseal 31 is mounted on the first joint 30.

[0017] The gauge set 70 includes a gauge 72, a housing 74 for receivingthe gauge 72, a tube 76 extending from the housing 74 and a collar 78formed on the tube 76. The tube 76 defines two apertures 79.

[0018] A second joint 40 includes an axial channel 41 defined therein, afirst transverse channel 42 in communication with the axial channel 41and a second transverse channel 43 in communication with the axialchannel 41. A check valve 48 is installed in the axial channel 41 inorder to allow air to flow from the first transverse channel 42 to thesecond transverse channel 43 only, not vice versa. Two annular seals 44are mounted on the second joint 40. The first transverse channel 42 ispositioned between the annular seals 44. Two annular seals 45 aremounted on the second joint 40. The second transverse channel 43 ispositioned between the annular seals 45. The second joint 40 includes ahead 46 at one end and a thread 47 at an opposite end.

[0019] The nozzle set 50 includes a cap 51, a nozzle 51 and a pipe 53via which the cap 51 is communication with the nozzle 52.

[0020] In assembly, the first joint 30 is put in the lower end of thecylinder 24 so that the transverse channel 32 is in communication withthe apertures 23. The annular seal 31 provides sealing between the firstjoint 30 and the cylinder 24. The collar 78 is put on the socket 12 sothat the apertures 79 are in communication with the apertures 16.Through the collar 78, the lower end of the cylinder 24 is inserted inthe socket 12 so that the apertures 23 are in communication with theapertures 16. Thus, the transverse channel 32, the apertures 23, 16 and79 are in communication with one another.

[0021] The second joint 40 is inserted in the apertures 16 and 23 andthe transverse channel 32 and the apertures 79. The axial channel 33 ofthe first joint 30 is in communication with the first transverse channel42 of the second joint 40. The annular seals 44 ensure that air flowsfrom the axial channel 33 of the first joint 30 to the first transversechannel 42 of the second joint 40. The second transverse channel 43 ofthe second joint 40 is in communication with the tube 76. The annularseals 45 ensure that air flows from the second transverse channel 43 ofthe second joint 40 to the tube 76. The air flows to the gauge 72through the tube 76 and the housing 74.

[0022] The thread of the hollow connector 52 is engaged with the thread47 of the second joint 40. The axial channel 41 is in communication withthe cap 51. The nozzle 52 can be engaged with a valve of an article tobe pumped.

[0023]FIG. 4 shows a pump 60′ according to a second embodiment of thepresent invention. The pump 60′ is identical to the pump 60 except thatfirst joint 30 is integrated with the base 10. The socket 12 can besaved in the pump 60′.

[0024] The present invention has been described via detailedillustration of two embodiments. Those skilled in the art can derivevariations from the embodiments without departing from the scope of thepresent invention. Hence, the embodiments shall not limit the scope ofthe present invention. The scope of the present invention is defined inthe claims.

1. A pump comprising: a base comprising a socket; a pumping setcomprising a cylinder inserted in the socket and a piston put in thecylinder; a first joint put in the cylinder, the first joint comprisinga transverse channel and an axial channel in communication with thetransverse channel; a gauge set comprising a gauge, a housing forreceiving the gauge and a tube extending from the housing; a secondjoint inserted in the socket, the cylinder, the first joint and thetube, the second joint comprising an axial channel, a first transversechannel for communicating the axial channel thereof with the axialchannel of the first joint and a second transverse channel forcommunicating the axial channel thereof with the tube; and a nozzle incommunication with the second joint.
 2. The pump according to claim 1wherein the socket defining two apertures for receiving the secondjoint.
 3. The pump according to claim 1 wherein the cylinder defines twoapertures for receiving the second joint.
 4. The pump according to claim1 wherein the tube defines two apertures for receiving the second joint.5. The pump according to claim 1 wherein the gauge set comprises acollar formed on the tube, and the cylinder is inserted in the socketthrough the collar.
 6. The pump according to claim 1 wherein the pumpingset comprises a rod connected with the piston.
 7. The pump according toclaim 6 wherein the pumping set comprises a handle attached to the rod.8. The pump according to claim 1 wherein the base comprises at least onepedal extending from the socket.
 9. The pump according to claim 1wherein the nozzle set comprises a nozzle for receiving a valve of anarticle to be pumped and a pipe for communicating the nozzle with thesecond joint.
 10. The pump according to claim 9 wherein the nozzle setcomprises a cap for communicating the pipe with the second joint. 11.The pump according to claim 1 wherein the second joint includes a headfor abutment against the cylinder.
 12. The pump according to claim 1wherein the first joint is made independent of the base.
 13. The pumpaccording to claim 1 wherein the first joint is integrated with thebase.
 14. A pump comprising: a base comprising a first joint formedthereon, the first joint comprising a transverse channel and an axialchannel in communication with the transverse channel; a pumping setcomprising a cylinder for receiving the first joint and a piston put inthe cylinder, the cylinder defining two apertures in communication withthe transverse channel of the first joint; a gauge set comprising agauge, a housing for receiving the gauge and a tube extending from thehousing and defining two apertures in communication with the transversechannel of the first joint; a second joint inserted in the apertures ofthe cylinder, the transverse channel of the first joint and theapertures of the tube, the second joint comprising an axial channel, afirst transverse channel for communicating the axial channel thereofwith the axial channel of the first joint and a second transversechannel for communicating the axial channel thereof with the tube; and anozzle in communication with the second joint.
 15. The pump according toclaim 14 wherein the cylinder defines two apertures for receiving thesecond joint.
 16. The pump according to claim 14 wherein the tubedefines two apertures for receiving the second joint.
 17. The pumpaccording to claim 14 wherein the base comprises a socket for receivingthe cylinder.
 18. The pump according to claim 17 wherein the socketdefining two apertures for receiving the second joint.
 19. The pumpaccording to claim 14 wherein the gauge set comprises a collar formed onthe tube, and the cylinder is inserted in the socket through the collar.20. The pump according to claim 14 wherein the second joint includes ahead for abutment against the cylinder.